'Warchild', written by Andrew Cartmel, features the Seventh Doctor, Bernice, Roz, and Chris.
Back Cover Blurb
Adolescence is a difficult time. Especially when yu have the power to rule the world.
Creed is just an ordinary guy - as ordinary as you can be when you're a secret agent working for the government. But his family is another matter. His youngest child seems able to read his mind. His oldest boy, Ricky, may possess a stranger and far more frightening power. And others seem interested in his 'gifted' children - sinister forces who see them as a resource to be exploited.
Around the world, the Doctor's companions have been put in place, ready to act when the time is right. Old friends and enemies are gathering for a final confrontation that will shape the future of the globe - and the evolution of mankind.
Warchild is the shattering conclusion to the dark trilogy which began with Warhead and continued in Warlock